50 opposite words suitable for children in 3rd and 4th grade:

1. Above - Below

2. After - Before

3. Alive - Dead

4. Always - Never

5. Begin - End

6. Big - Small

7. Black - White

8. Boy - Girl

9. Brave - Cowardly

10. Bright - Dark

11. Buy - Sell

12. Close - Open

13. Cold - Hot

14. Day - Night

15. Dirty - Clean

16. Dry - Wet

17. Early - Late

18. Easy - Difficult

19. Empty - Full

20. Fast - Slow

21. Fat - Thin

22. First - Last

23. Forget - Remember

24. Friend - Enemy

25. Hard - Soft

26. Heavy - Light

27. High - Low

28. In - Out

29. Kind - Mean

30. Laugh - Cry

31. Light - Heavy

32. Long - Short

33. Lost - Found

34. Loud - Quiet

35. Many - Few

36. Near - Far

37. New - Old

38. Night - Day

39. Noisy - Silent

40. North - South

41. Open - Closed

42. Over - Under

43. Poor - Rich

44. Push - Pull

45. Rich - Poor

46. Safe - Dangerous

47. Short - Tall

48. Shy - Bold

49. Strong - Weak

50. Summer - Winter